When is better to buy crypto, on pre sale or on ICO? When you buy on presale, you can get good bonuses, however when you buy on ICO you have a better gurantee not to be scammed.
You will gwt more coins or discount during the pre sale. However, investors during this stage takes more risk since there is a chance that the ICO will not be succussful or will not have enough funds to develop the project. I guess that is why pre sale investors get more token.